You should wear something comfortable on your feet.
Make sure you wear some good footwear.
この場合、次のような言い方ができますよ。
ーYou should wear something comfortable on your feet.
「履き心地の良い靴を履いてきた方が良いよ」
ーMake sure you wear some good footwear.
「履き心地の良い靴を履いてきてね」
例：
We're going to walk a lot tomorrow, so you should wear something comfortable on your feet.
「明日はたくさん歩くから、履き心地の良い靴を履いてきてね」
ご参考まで！
カナダ 
